Chart correction 41/23 — chart 18474

★18474  11Ed.  12/01/15  LAST  NM  40/23  41/23 Change Light to "4" Fl R 4s 15ft 6M with obscured sector 125°-290°   47°37′19″N  122°29′51″W and delete Ra Ref (33/23 CG13; USCG LL)

Source: NGA U.S. Notice to Mariners · edition: 11Ed. 12/01/15

Reference information — always verify against official Notices to Mariners before navigation.